James martin



(No Model.)

J. MARTIN. CAR VBNTILATOR.

No. 471,649. Patented Mar.- '29', .1892.

,Viii/ceases UNITED STATES PATEN'T OFFICE.

JAMES MARTIN, OF TORONTO, CANADA.

CAR-VENTILATOR.

SPECIFICATION forming part of Letters Patent No. 471,649, dated. March 29, 1892. I

.Application filed September 1'7, 1890. Serial NoK 365,305- (No model.)

.To all whom it may concern.-

Be i-t known that I, JAMES MARTIN, banker, of the city of Toronto, in the county of York, in the Province of Ontario, Canada, have invented a certain new and Improved Car-Ventilator, of which the following is a specification.

The object of the invention is to design means by which the foul air from a car or apartment will be drawn therefrom either by the motion of the car or wind; and it consists, essentially, of one or more suction-fans placed in an aperture formed in the ceiling of the car or apartment and connected to the same shaft, as a windwheel or motor, located outside of the car or apartment, the whole being otherwise made substantially as hereinafter more particularly explained and then definitely claimed.

Figure lis a View showing my improved ventilator applied to a railway-car. Fig. 2 is a plan for operating a series of agitating-fans in connection with the exhaust-fan. Fig. 3 is an enlarged detail of my inproved exhaustfan.

In illustrating my invention I have shown it applied to a railway-car, although it will of course be understood that it may be used for ventilating an apartment when a sufficient force of w ind can be depended upon to revolve the fan.

In the drawings I show a ventilator located at each end of the car; but of course I do not wish to confine myself to any particular number of elevators. i

A represents a wind-Wheel partially inclosed by a casing B and connected to a spindle O, which is suitably supported and journaled, as indicated.

D is an Archimedean screw forning an exhaust-fan, located in an aperture made in the ceiling of the car and connected to the spindle O.

E is a fan-tail connected to and projecting from the casing B, which fan-tail sets the casing in the proper direction, so that the wind shall act against the blades of the windwheel A.

When the car is in motion, the wind-wheel A will be caused to constantly revolve, and as it is connected to the same spindle C as the exhaust-fan D the said exhaust-fan will likewise revolve, thereby drawing the heated and foul air from the car and discharge it outside.

In very hot vweather a gentle agitation of .the air in the car will be found pleasant, and

States Patents Nos. 78,201 and 436,701 and others, and hence do not claim this, broadly. My invention differs from those referred to in having the wind-Wheel and exhaust-fan not only on the same shaft, but in close proximity to each other, and also in having the wind-wheel and exhaust-fan, the pulley H, and casing B all on the same shaft.

What I claim as my invention is-- 1. The combination, in a ventilator, of a wind-wheel A, partially exposed to the outer atmosphere, a semicircular casing B, partially covering the same and having a fan-tail E to control its position, an exhaust-fan D, working in a cylinder immediately beneath the casing B and opening therein, and a vertical spindle or shaft C, having both wind-wheel and exhaust-fan rigidly secured thereto, and the casing loosely mounted thereon, substantially as described.

2. The combination, in a ventilator, of a wind-wheel A, partially exposed to the outer atmosphere, a semicircular casing B, partially covering the same and having a fan-tail E to control its position, an exhaust-fan D, a series of fans F to keep the air in motion inside the car, a belt G for giving motion to the fans F, and a pulley H for imparting motion to the belt which operates the fans, said pulley H, exhaust-fan D, wind-wheel A, and casing B all being mounted on shaft C, substantially the exhaust and the fanning devices, subas and for the purpose specified. stantially as described.

3. In a car-ventilator, a suction -fa for Toronto, August 12th, 1,890. Withdrawing the air from the car, a series of fans arranged in different positions inside JAMES MARTIN. the body of the car and const'ucted and ar- In presence ofranged to fan the occupants thereof, and a A. G. MURRAY,

wnd-whee1 connected with and driving both CHARLEs C. BALDWIN. 

